Canada’s Grand Cannabis Experiment Has Set Scientists Free

Enter Tilray, which, in a rare first this September, was approved by the Drug Enforcement Administration to supply cannabis extract from Canada to a California neurologist who’s developing a treatment for tremors in the elderly. (Tilray has also built a greenhouse in a Portugal research park, expanding the science into the European Union.) America’s cannabis entrepreneurs, however, aren’t so keen on the prospective northern pot pipeline. One multistate medical grower has pleaded with President Trump for domestic regulation in a full-page Wall Street Journal ad, fretting that “America is rapidly losing its competitive advantage to Canada!”

As bidding wars replace the drug war, legalization promises empirical evidence for policymakers caught between popular sensibilities and a paucity of data. Canada’s statistical agency and the

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